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-/*
-Open Asset Import Library (assimp)
-----------------------------------------------------------------------
-
-Copyright (c) 2006-2022, assimp team
-
-
-All rights reserved.
-
-Redistribution and use of this software in source and binary forms,
-with or without modification, are permitted provided that the
-following conditions are met:
-
-* Redistributions of source code must retain the above
- copyright notice, this list of conditions and the
- following disclaimer.
-
-* Redistributions in binary form must reproduce the above
- copyright notice, this list of conditions and the
- following disclaimer in the documentation and/or other
- materials provided with the distribution.
-
-* Neither the name of the assimp team, nor the names of its
- contributors may be used to endorse or promote products
- derived from this software without specific prior
- written permission of the assimp team.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-----------------------------------------------------------------------
-*/
-
-/** @file Defines a helper class for the ASE and 3DS loaders to
- help them compute camera and spot light animation channels */
-#ifndef AI_TARGET_ANIMATION_H_INC
-#define AI_TARGET_ANIMATION_H_INC
-
-#include <assimp/anim.h>
-#include <vector>
-
-namespace Assimp {
-
-// ---------------------------------------------------------------------------
-/** Helper class to iterate through all keys in an animation channel.
- *
- * Missing tracks are interpolated. This is a helper class for
- * TargetAnimationHelper, but it can be freely used for other purposes.
-*/
-class KeyIterator {
-public:
- // ------------------------------------------------------------------
- /** Constructs a new key iterator
- *
- * @param _objPos Object position track. May be nullptr.
- * @param _targetObjPos Target object position track. May be nullptr.
- * @param defaultObjectPos Default object position to be used if
- * no animated track is available. May be nullptr.
- * @param defaultTargetPos Default target position to be used if
- * no animated track is available. May be nullptr.
- */
- KeyIterator(const std::vector<aiVectorKey> *_objPos,
- const std::vector<aiVectorKey> *_targetObjPos,
- const aiVector3D *defaultObjectPos = nullptr,
- const aiVector3D *defaultTargetPos = nullptr);
-
- // ------------------------------------------------------------------
- /** Returns true if all keys have been processed
- */
- bool Finished() const { return reachedEnd; }
-
- // ------------------------------------------------------------------
- /** Increment the iterator
- */
- void operator++();
- inline void operator++(int) { return ++(*this); }
-
- // ------------------------------------------------------------------
- /** Getters to retrieve the current state of the iterator
- */
- inline const aiVector3D &GetCurPosition() const { return curPosition; }
-
- inline const aiVector3D &GetCurTargetPosition() const { return curTargetPosition; }
-
- inline double GetCurTime() const { return curTime; }
-
-private:
- //! Did we reach the end?
- bool reachedEnd;
-
- //! Represents the current position of the iterator
- aiVector3D curPosition, curTargetPosition;
-
- double curTime;
-
- //! Input tracks and the next key to process
- const std::vector<aiVectorKey> *objPos, *targetObjPos;
-
- unsigned int nextObjPos, nextTargetObjPos;
- std::vector<aiVectorKey> defaultObjPos, defaultTargetObjPos;
-};
-
-// ---------------------------------------------------------------------------
-/** Helper class for the 3DS and ASE loaders to compute camera and spot light
- * animations.
- *
- * 3DS and ASE store the differently to Assimp - there is an animation
- * channel for the camera/spot light itself and a separate position
- * animation channels specifying the position of the camera/spot light
- * look-at target */
-class TargetAnimationHelper {
-public:
- TargetAnimationHelper() :
- targetPositions(nullptr),
- objectPositions(nullptr) {
- // empty
- }
-
- // ------------------------------------------------------------------
- /** Sets the target animation channel
- *
- * This channel specifies the position of the camera/spot light
- * target at a specific position.
- *
- * @param targetPositions Translation channel*/
- void SetTargetAnimationChannel(const std::vector<aiVectorKey> *targetPositions);
-
- // ------------------------------------------------------------------
- /** Sets the main animation channel
- *
- * @param objectPositions Translation channel */
- void SetMainAnimationChannel(const std::vector<aiVectorKey> *objectPositions);
-
- // ------------------------------------------------------------------
- /** Sets the main animation channel to a fixed value
- *
- * @param fixed Fixed value for the main animation channel*/
- void SetFixedMainAnimationChannel(const aiVector3D &fixed);
-
- // ------------------------------------------------------------------
- /** Computes final animation channels
- * @param distanceTrack Receive camera translation keys ... != nullptr. */
- void Process(std::vector<aiVectorKey> *distanceTrack);
-
-private:
- const std::vector<aiVectorKey> *targetPositions, *objectPositions;
- aiVector3D fixedMain;
-};
-
-} // namespace Assimp
-
-#endif // include guard